Crate nexcore_pty 

POSIX pseudo-terminal allocation — safe wrappers around openpty(3) and friends.

Foundation-layer crate with a single external dependency (libc). Wraps openpty(), fork(), setsid(), dup2(), execvp(), and TIOCSWINSZ ioctl behind safe Rust functions.

Supply Chain Sovereignty

This crate replaces external PTY crates (nix, portable-pty) with a minimal, auditable wrapper around POSIX system calls. ~250 lines, zero transitive dependencies beyond libc.

Primitive Grounding

∂(Boundary) + ς(State) + →(Causality)

Structs

PtyPair

A matched pair of PTY file descriptors (master + slave).

SpawnConfig

Configuration for spawning a child process in a PTY.

WinSize

Terminal dimensions for PTY allocation and resize.

Enums

PtyError

Errors from PTY operations.

Functions

fork_exec

Fork and exec a program in the slave PTY.

open_pty

Allocate a new pseudo-terminal pair.

read_master

Read bytes from a PTY master fd (synchronous).

resize

Resize the terminal via TIOCSWINSZ ioctl.

set_nonblocking

Set a file descriptor to non-blocking mode (O_NONBLOCK).

signal_process

Send a signal to a process.

try_wait_pid

Non-blocking wait for child exit status.

write_master

Write bytes to a PTY master fd (synchronous).